Large Flange Cassette Hubs from Electra Ticino -any good ?

I have just found details of these Large Flange Cassette hubs - C-Record replicas from Electrabikes in the USA

They look fantastic, and just the thing for a new frame I am having built in an "old style"

http://nihonmaru.blogspot.com/2010/04/e ... -road.html

https://www.electrabike.com/store/

(look under Ticino parts)

Seem to take Shimano compatible cassettes.

I have never heard of Electrabikes - is their quality anygood ?

Despite being a very experienced cyclist, I have never owned cassette hubs (all my machines are screw-on-blocks)

Are cassette mechanisms "generic" ie. will I be able to replace the freehub mechanism with a shimano freehub mecanism if I got problems, or is it likely to take only an Electrabikes mechanism, meaning Iam tied into them for spares ?

And what is the situation with replacing cassettes - a whole cassette at a time, even if only 1 sprocket is worn, or can I replace single sprockets (and whats availability of these like )

Nice hubs - replica prices too! Most freehub designs are unique to each manufacturer, so generally not interchangeable with other makes. Might be worth dropping them a line regarding spares compatibility.